Purple line draws mega-firms

A panel will be formed to screen the bidders for meeting qualification criteria and proposing the best construction techniques and quotes, said a source from the Mass Rapid Transit Authority of Thailand, the developer of the suburban rail project.

"You'd better closely watch who's going to sit on the committee, whether they have close connections with any political groups," he said.

Transport Minister Santi Prompat said the strong

interest should ensure fair bidding.

Aside from nearly all big local contractors, picking up the bidding package during the April 21-May 2 period were Japanese companies Obayashi, Tokyu, Nishimitsu and Kajima, as well as Italy's Rizzani De Eccher.

The 23-kilometre route will be funded by a loan facility from the Japan Bank for International Cooperation.